Improvement in rolling-machine for leather



To all whom t't may concern lnterl garten @anni dtjiiiw.

Letters Patent No. 101,234, dated Ma/rch- 29, 1870.

IMPROVEMENT IN ROLLING-MACHINE FOR LEATHER i The Schedule referred to inthese Letters Patent and lmaking part ofthe same Be it known that I, JCHN G. CURTIS, of Emporium, in the county of Cameron and StateofPennsylvania, have invented a new andimproved Leather-rolling Machine;and I do hereby declare that the following is a full, clear, and exactdescription thereof, which will enable others skilled iu theart to makeand use the same, reference being had to tlieaccompauying drawingsforming part of this specification.

This invention relates to that class of leather-rolling machines whichwork with toggle or knucklejoints, and consists in certain improvementsthereon, which will be particularly specified hereinafter.

Figure 1 is a side elevation of my improved machine with la partrepresented in section, and

Figure 2 is a transverse section through the rod or bar for operatingthe rocker-arms.

Similar letters of reference indicate corresponding parts.

A is the frame of the machine;

B the pendent'vibrating roller support;

. C the roller;

D the concave bed; and

E the connecting-rod, by which motion is lcommunicated to the rollersupport and rollers.

I place this rolling bed D on a springing support, E', arranged in theparts of the frame for adjustment higher or lower, as required, as shownat F, and under this support l arrange the eccentric rocker-arms G, inone or more` pairs, and the reciprocating bar H, as clearly shown in thedrawings, for raising the bed D, and its support E toward the roller byspringing the said support when required for varying the pressure on theleather placed on the bed D, and subjected to the action of the roller.These arms G have eccentric curved bases I, and "the ends opposite thesaid bases are connected to the rod or bar H in notches K, which serveas the axis or the rocking motion of the said arms, which axis is movedto and fro when the bar H is moved, causing an upward movement to theVsupport E, as the greater radii of the arms are brought to coincidewith the line perpendicular to the rod H. The downward movement of thesupport is caused The arm M is provided with a slot for theconnecting-piu 'of the rod or bar H, to admit of the necessary radialmovement of the pin with thev said arm.

'10 prevent the rocker arms ti'o'm slipping on their bases, they areserrated, notched, or provided with cogs or teeth, and plates O, withrecesses in the faces, for the reception ofthe curved bases of t-hearms, and

l with notches, serrations or cogs corresponding to those on the arms,one attached to the support E and the permanent bed, and suitablyarranged' to hold them in place, both laterally and in the direction inwhich they rock. The said arms are ^shaped on the other end, where theytit the notches in the bar, and these points are notched, as shown intig. .2, to t bars P, extending across the notches, which prevent the escape of these ends laterally. v

The mode of construction is very cheap and simple, requiring little orno fitting in putting together the parts being suitably formed bycasting.

Having thus described my invention,

I claim as new and desire to secure by Letters Patent- Y 1. Thecombination of the treadle, rock-shaft, slotted arm M, reciprocating rodH, eccentric cogged arms G, and corresponding rack-plates 0, allarranged as set forth.

2. The eccentric knees G, having their sharp ends I JN0. Dor, A, J.Moons.

